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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20230126T100000
DTEND;TZID=America/Vancouver:20230126T110000
DTSTAMP:20230118T230827Z
CREATED:20230118T230827Z
LAST-MODIFIED:20230118T230827Z
UID:5306-1674727200-1674730800@qmi.miffanytark.com
SUMMARY:CM Seminar: Alannah Hallas: Entropy Engineering and Tunable Magnetic Order in the Spinel High Entropy Oxide
DESCRIPTION:Dr. Alannah Hallas: Blusson Quantum Matter Institute \nTitle: Entropy engineering and tunable magnetic order in the spinel high entropy oxide \nAbstract: The field of high entropy oxides (HEOs) flips traditional materials science paradigms on their head by seeking to understand what properties arise in the presence of profound configurational disorder. This disorder\, which emerges as the result of multiple elements sharing a single crystalline lattice\, can take on a kaleidoscopic character due to the vast numbers of possible elemental combinations and appears to imbue some HEOs with functional properties that far surpass their conventional analogs. While experimental discoveries abound\, efforts to characterize the true magnitude of the configurational entropy and understand its role in stabilizing new phases and generating superior functional properties have lagged behind. Understanding the role of configurational disorder in existing HEOs is the crucial link to unlocking the rational design of new HEOs with targeted properties. In this talk\, I will discuss our group’s efforts to establish a framework for articulating and beginning to address these questions towards achieving a complete understanding of the true role of entropy in HEOs. \nBio: Alannah Hallas is an Assistant Professor in the Department of Physics & Astronomy at UBC\, a Principal Investigator at the Stewart Blusson Quantum Matter Institute\, and a CIFAR Azrieli Global Scholar in Quantum Materials. Alannah’s research program is focused on the design\, discovery\, and crystal growth of new quantum materials\, leveraging a wide range of advanced crystal growth techniques. Her group characterizes the quantum magnetic properties of their materials using x-ray and neutron scattering as well as muon spin relaxation techniques.
URL:https://qmi.miffanytark.com/event/cm-seminar-alannah-hallas-entropy-engineering-and-tunable-magnetic-order-in-the-spinel-high-entropy-oxide/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20230119T100000
DTEND;TZID=America/Vancouver:20230119T110000
DTSTAMP:20230103T192036Z
CREATED:20230103T192036Z
LAST-MODIFIED:20230103T192036Z
UID:5253-1674122400-1674126000@qmi.miffanytark.com
SUMMARY:CM Seminar: Mark Rudner: “The Lindblad Quantum Master Equation: Not Just for quantum Optics Anymore"
DESCRIPTION:Prof. Mark Rudner – University of Washington \nTitle: “The Lindblad Quantum Master Equation: Not Just for quantum Optics Anymore” \nAbstract: With the exception of the universe as a whole\, the evolution of a quantum system is generically non-unitary due to the coupling between the system and its environment. In quantum optics\, the powerful framework of Lindblad master equations has been developed and employed for many years to describe the effective evolution of atomic-like systems in the presence of electromagnetic and other environmental degrees of freedom. Importantly\, explicit derivations of Lindblad master equations have traditionally relied on highly restrictive assumptions on energy level spacings that limit its applicability to few-level/few-body systems. In this talk I will review the basic features of evolution of open quantum systems\, and describe a new route to obtaining the Lindblad equation which circumvents all restrictive assumptions on the nature of the system at hand. This “universal Lindblad equation” can therefore be applied to a wide range of many-body systems\, including emerging quantum hardware with several to many coupled qubits and many-body systems driven far from equilibrium. The explicit expressions for the “jump operators” that describe incoherent processes induced by the bath have a natural interpretation in terms of an operator spreading picture\, akin to that which has recently provided much insight into thermalization of closed quantum systems. I will conclude with a discussion of future prospects and applications of this new framework. \nBio: Mark Rudner is the Kenneth K. Young Memorial Professor of Physics at the University of Washington. His research interests span a broad range of topics in theoretical condensed matter physics and quantum dynamics. Following his PhD at MIT\, in which he studied classical and quantum control in solid state spin and superconducting qubits\, as well as transport in graphene\, in 2008 Mark moved to Harvard for a postdoctoral fellowship. During this time\, he developed foundational works on topological phenomena in both driven (“Floquet”) and open (non-Hermitian) quantum systems. In 2012\, Mark moved to Copenhagen\, where he joined the Center for Quantum Devices at the Niels Bohr Institute and took charge of the Condensed Matter Theory group at the Niels Bohr International Academy. Over the next decade\, Mark maintained a role as one of the leaders in the emerging fields of Floquet engineering and non-equilibrium quantum dynamics\, while further exploring novel (linear and non-linear) collective phenomena that arise from the interplay of quantum geometry and interparticle interactions. In 2021 Mark joined the University of Washington\, where he is continuing these efforts while expanding into new directions in collaboration with his experimental and theoretical colleagues.
URL:https://qmi.miffanytark.com/event/cm-seminar-mark-rudner-the-lindblad-quantum-master-equation-not-just-for-quantum-optics-anymore/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221201T100000
DTEND;TZID=America/Vancouver:20221201T110000
DTSTAMP:20221104T225912Z
CREATED:20221104T225912Z
LAST-MODIFIED:20221104T225912Z
UID:5042-1669888800-1669892400@qmi.miffanytark.com
SUMMARY:CM Seminar: Thomas Scaffidi - Spread and Erase - How Electron Hydrodynamics Can Eliminate the Landauer-Sharvin Resistance
DESCRIPTION:Thomas Scaffidi – University of California Irvine \nTitle: Spread and Erase – How Electron Hydrodynamics Can Eliminate the Landauer-Sharvin Resistance \nAbstract: What is the ultimate limit of conductance of a metallic device of lateral size W? In the ballistic limit\, the answer is the Landauer-Sharvin conductance\, which is associated with an abrupt reduction of the number of conducting channels when going from the contacts to the device. However\, the ballistic limit is not always the best-case scenario\, since adding strong electron-electron scattering can take electrons to a viscous regime of transport for which “super-ballistic” flows were recently studied. In this talk\, we will show that by a proper choice of geometry which resembles a “wormhole”\, it is possible to spread the Landauer-Sharvin resistance throughout the bulk of the system\, allowing its complete elimination by electron hydrodynamics. This effect arises due to the interplay between geometry and strong electron-electron scattering\, which allows for a net transfer of carriers from reflected to transmitted channels. Finally\, we will discuss a recent experiment in a Corbino geometry which realizes one half of this “wormhole” geometry. \nRefs:\nTheory: Phys. Rev. Lett. 129\, 157701 (2022)\nExperiment: Nature 609\, 276–281 (2022) \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-thomas-scaffidi-spread-and-erase-how-electron-hydrodynamics-can-eliminate-the-landauer-sharvin-resistance/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221124T100000
DTEND;TZID=America/Vancouver:20221124T110000
DTSTAMP:20221108T200540Z
CREATED:20221108T200540Z
LAST-MODIFIED:20221108T200540Z
UID:5048-1669284000-1669287600@qmi.miffanytark.com
SUMMARY:CM Seminar: Long Ju - Electron Correlation and Coupling with Phonon in the Trilayer Graphene/hBN Moire Superlattice
DESCRIPTION:Long Ju – MIT Physics Department  \nTitle: Electron Correlation and Coupling with Phonon in the Trilayer Graphene/hBN Moire Superlattice \nAbstract: ABC-stacked trilayer graphene/hexagonal boron nitride moiré superlattice (TLG/hBN) has emerged as a playground for correlated electron physics. A spectroscopy study of this system is\, however\, challenging due to the device configuration. In this talk\, I will introduce our recent efforts on FTIR photocurrent spectroscopy measurements of dual-gated TLG/hBN. We observed strong gate-tunable optical transitions that originated from the moire flat band. At half-filling of the valence flat band\, a broad absorption peak emerges at ~18 meV\, indicating direct optical excitation across an emerging Mott gap. Furthermore\, I will talk about a unique moire-enabled interlayer electron-phonon coupling phenomenon in this system. The ZO phonon in hBN hybridizes with electron-hole excitations in trilayer graphene and appear as an asymmetric peak in the photocurrent spectrum. This Fano line-shaped peak evolves continuously as we tune the displacement field. I’ll talk about the implications of this phenomenon to engineering the physics of moire quantum matters. \nBio: Long Ju joined the MIT Physics Department as an assistant professor in January 2019. He received his B.S. in Physics in 2009 from Tsinghua University\, China\, and his Ph.D. in Physics in 2015 from the University of California\, Berkeley. He then moved to Cornell University\, where he was a Kavli postdoctoral fellow until December 2018. \n  \n​ \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-long-ju-electron-correlation-and-coupling-with-phonon-in-the-trilayer-graphene-hbn-moire-superlattice/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221117T100000
DTEND;TZID=America/Vancouver:20221117T110000
DTSTAMP:20221110T004813Z
CREATED:20221110T004813Z
LAST-MODIFIED:20221110T004813Z
UID:5058-1668679200-1668682800@qmi.miffanytark.com
SUMMARY:CM Seminar: Professor Kai-Mei C Fu - Quantum Point Defects: Can These Defects Be Less Defective?
DESCRIPTION:Professor Kai-Mei C Fu –  University of Washington  \nTitle: Quantum point defects: Can these defects be less defective? \nAbstract: Point defects in crystals are the solid state analog to trapped ions. Thus these “quantum defects”\, which can be integrated into solid-state devices\, have gained popularity as qubit candidates for scalable quantum networks. In this talk\, I will introduce some of the basic quantum defect properties desirable for quantum network applications. I will highlight my own group’s efforts at understanding and controlling the properties of defects in diamond including (1) synthesis\, frequency and emission control of deep-level vacancy complexes in diamond and (2) properties of shallow-level donors in ZnO\, including single donors and intentionally synthesized donors in ZnO. \nBio: Kai-Mei Fu is the Virginia and Prentice Bloedel Professor of Physics and Electrical and Computer Engineering at the University of Washington and holds a dual appointment with the Pacific Northwest National Laboratory. Kai-Mei received their PhD in Applied Physics \nin 2007 from Stanford University. Their research focuses on the synthesis\, characterization and control of optically active quantum defects in crystals\, with applications in quantum networks and sensing. At UW\, Kai-Mei is the Director of UW’s NSF National Research Training Program: Accelerating Quantum-Enabled Technologies and the co-chair of UW’s interdisciplinary QuantumX Steering Committee.  They are also the Deputy Director of the Department of Energy National Quantum Initiative (NQI) Co-design Center for Quantum Advantage. In their free time\, Kai-Mei enjoys spending time with their family outdoors in the beautiful Pacific Northwest. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-professor-kai-mei-c-fu-quantum-point-defects-can-these-defects-be-less-defective/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221110T100000
DTEND;TZID=America/Vancouver:20221110T110000
DTSTAMP:20221026T201345Z
CREATED:20221026T201345Z
LAST-MODIFIED:20221026T201345Z
UID:5020-1668074400-1668078000@qmi.miffanytark.com
SUMMARY:CM Seminar: Joyce Poon: Visible-light Silicon Integrated Photonics for Future Computing
DESCRIPTION:Joyce Poon – University of Toronto \nTitle: Visible-light Silicon Integrated Photonics for Future Computing \nAbstract: The emerging demands of computing require hardware advances to realize new types of computing architectures and interfaces. Foundry silicon photonics leverages the maturity of microelectronics manufacturing to fabricate photonic integrated circuits. Today\, silicon photonics is mostly used in the short-wave infrared spectrum for optical communications. I will discuss how foundry silicon photonics in the visible spectrum is an enabling technology for future computing\, addressing applications such as displays\, neural implants\, and quantum computing. \nBiography: Joyce Poon is the Managing Director at the Max Planck Institute of Microstructure Physics\, a Professor of Electrical and Computer Engineering at the University of Toronto\, and an Honorary Professor in the Faculty of Electrical Engineering and Computer Science at the Technical University of Berlin.  She currently serves as a Director-at-Large for Optica (formerly the Optical Society\, OSA). She and her team specialize in integrated photonics on silicon.  Prof. Poon obtained the Ph.D. in Electrical Engineering from Caltech in 2007. She is a Optica Fellow and a Fellow of the IEEE.
URL:https://qmi.miffanytark.com/event/cm-seminar-joyce-poon-visible-light-silicon-integrated-photonics-for-future-computing/
CATEGORIES:CM Seminar,Student event
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221103T100000
DTEND;TZID=America/Vancouver:20221103T110000
DTSTAMP:20221011T201725Z
CREATED:20221011T201725Z
LAST-MODIFIED:20221011T201725Z
UID:4970-1667469600-1667473200@qmi.miffanytark.com
SUMMARY:CM Seminar: Professor Romain Vasseur - Anomalous Diffusion in Quantum Spin Chains
DESCRIPTION:Professor Romain Vasseur – University of Massachusetts\, Amherst \nTitle: Anomalous diffusion in quantum spin chains  \nAbstract: High-temperature quantum transport is usually assumed to be incoherent and diffusive.  In this talk\, I will explain how anomalous transport in quantum spin chains can emerge from proximity to special integrable limits\, due to a hierarchy of long-lived quasiparticle excitations. I will summarize our understanding of finite-temperature transport in integrable spin chains\, and argue that integrability-breaking perturbations can generically lead to either super- or subdiffusion up to very long-time scales. \nBio: Romain Vasseur is an Associate Professor in the Physics Department of the University of Massachusetts\, Amherst.  He is a condensed matter theorist working on strongly correlated quantum systems and quantum information\, with a focus on the interplay of strong interactions and quantum entanglement\, leading to new emergent phenomena both in thermal equilibrium and in non-equilibrium quantum systems. Before moving to Amherst\, Dr. Vasseur was a Postdoctoral Fellow at Lawrence Berkeley National laboratory (2013-2017)\, working in the Condensed Matter Theory Center at the University of California\, Berkeley. He obtained his PhD at IPhT (CEA\, Saclay) and LPTENS (ENS\, Paris) in 2013. Prof. Vasseur has been recognized as a fellow of the Alfred P. Sloan Foundation (2019) and an Early Career Award of the US Department of Energy (2018). He is also the recipient of a Young Investigator Award of the US Air Force Office of Scientific Research (2020). \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-professor-romain-vasseur-anomalous-diffusion-in-quantum-spin-chains/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221013T100000
DTEND;TZID=America/Vancouver:20221013T110000
DTSTAMP:20221004T221006Z
CREATED:20221004T221006Z
LAST-MODIFIED:20221004T221006Z
UID:4950-1665655200-1665658800@qmi.miffanytark.com
SUMMARY:CM Seminar: Dr. Anushya Chandran - Quantization of Dynamics in Quasi-periodically Driven Systems
DESCRIPTION:Dr. Anushya Chandran: Boston University \nTitle: Quantization of dynamics in quasi-periodically driven systems \nAbstract: In the past decade\, quantum simulators have increased in their power and scope\, offering exquisite dynamical control of tens or even hundreds of individual atoms/ions. \nConcurrently\, a topological revolution in our understanding of electronic band structures has taken place\, driven by the discovery of topological insulators\, graphene and other topological materials. Remarkably\, these advances can be connected — the dynamics of driven few level systems can be described using band structures in “synthetic dimensions\,” one per driving tone. Topological order in the synthetic band structure then leads to quantized dynamical responses in the quantum simulator. \nIn this talk\, I will use a unifying frequency lattice construction to reveal non-adiabatic topological responses in quasi-periodically driven systems. We will find that quasi-periodically driven qubits already exhibit topologically distinct dynamical phases\, and that a 2-tone driven wire can function as a quantized energy pump at any temperature. The latter system provides one of the few examples of many-body localization protected order that is absolutely stable. I will argue that the quantized energy pumping regime is accessible in near-term optical and microwave cavity-QED experiments\, and that furthermore\, it is useful to prepare highly excited non-classical cavity states and entangled cavity-qubit states. \nBio: Anushya Chandran studies the organizing principles of quantum systems far from equilibrium. Her research sheds light on the process of thermalization\, designs protocols to achieve non-trivial quantum dynamics\, and informs near-term quantum device design. Anushya hails from India\, where she studied at the Indian Institute of Technology in Madras. She received her PhD from Princeton University and performed post-doctoral research at Perimeter Institute before joining Boston University. She is the recipient of the Sloan fellowship and the NSF young investigator career award. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-dr-anushya-chandran-quantization-of-dynamics-in-quasi-periodically-driven-systems/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220929T100000
DTEND;TZID=America/Vancouver:20220929T110000
DTSTAMP:20220921T164849Z
CREATED:20220921T164849Z
LAST-MODIFIED:20220921T164849Z
UID:4927-1664445600-1664449200@qmi.miffanytark.com
SUMMARY:CM Seminar: Dr. Tina Rost\, High Entropy Ceramics: Investigating localized structural effects on emerging properties
DESCRIPTION:Speaker: Dr. Tina Rost \nDate: Thursday September 29 2022 \nTime: 10:00 am – 11:00 AM PST \nLocation: Zoom \nZoom Link: https://ubc.zoom.us/j/64243489212?pwd=YkFSMDdxN3Nhbm15aExBdTF6MnBvQT09 \nMeeting ID: 642 4348 9212 \nPasscode: 742838 \n  \nAbstract\nMany properties we observe in materials are a direct consequence of their composition and local structure. High entropy materials are a unique class of systems that do not have a primary composition; rather they contain a near-equimolar distribution of several elements— where no single element serves as host. Such compositional disorder is accompanied by a unique distribution of localized structural distortions that can have a profound effect on properties such as thermal conductivity\, magnetic interaction\, diffusion\, and more. To date\, high entropy metals and ceramics are gaining significant traction in the materials community as unique and interesting properties continue to emerge\, from amorphous-like thermal conductivities to exotic magnetic states. In this talk\, we present and discuss ongoing work on the local characterization of several high entropy compositions exhibiting crystal structures from rocksalts to Kagome lattices. In particular\, the use of X-ray absorption fine structure (XAFS) is demonstrated to aid in understanding such disorder on the local level and how it may influence functional properties \n  \nSpeaker Bio\nDr. Christina Rost is currently an Assistant Professor of Physics at James Madison University in Harrisonburg\, VA. She graduated with a Ph.D. in Materials Science and Engineering from North Carolina State University in 2016\, following both a B.S. and an M.S. in Physics from Indiana University of Pennsylvania. Her Ph.D. focused on the development and phase-characterization of a novel class of oxide systems stabilized through configurational disorder\, named “Entropy Stabilized Oxides”.   After graduation\, Tina was Postdoctoral Research Associate in the Experiments and Simulations in Thermal Engineering (ExSITE) group\, within the Department of Mechanical and Aerospace Engineering at the University of Virginia. There\, her work focused on experimental methods to test thermal properties at extremely high temperatures and thermal transport in complex and high-entropy oxides and carbides. Currently\, her all-undergraduate research group at JMU focuses efforts on complex oxide synthesis and characterization. She is an active member of the American Ceramics Society and the American Physical Society.
URL:https://qmi.miffanytark.com/event/cm-seminar-high-entropy-ceramics-investigating-localized-structural-effects-on-emerging-properties/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220407T100000
DTEND;TZID=America/Vancouver:20220407T110000
DTSTAMP:20220330T201042Z
CREATED:20220330T201042Z
LAST-MODIFIED:20220330T201042Z
UID:4248-1649325600-1649329200@qmi.miffanytark.com
SUMMARY:Dr. Valentino R. Cooper: Exploring the Chemical Landscape of High Entropy Oxides
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Dr. Valentino R. Cooper \nTitle: Exploring the Chemical Landscape of High Entropy Oxides \nAbstract: High entropy\, multi-component metal alloys (HEA)\, have superior mechanical properties and high radiation tolerances; which are\, in part\, driven by configurational entropy. Recently\, an oxide analogue comprised of MgO\, CoO\, NiO\, CuO and ZnO was synthesized; exhibiting a truly entropy-stabilized\, reversible phase transition from a multiphase material to a single rock salt-ordered phase above 850-900°C. This entropy-driven stabilization may engender many unique properties\, such as high melting temperatures\, radiation resistance and other anomalous responses. Here\, we discuss a design strategy for the prediction of synthesizable disordered oxides. Our effort employs first principles studies of 2-component oxides to develop design rules based on the relationship between pairwise enthalpies of formation\, DH\, and configurational entropy of the disordered material. A similar chemical identity-to-DH map was previously explored using the class of high entropy alloys\, where the stability of multicomponent metal alloys was correlated to the enthalpy of mixing of binary and ternary compounds. \nIn this presentation\, I will focus on our recent efforts to employ this local enthalpy map as an effective strategy for the discovery of new classes of entropy stabilized oxides. In particular\, we are able to use our first principles calculations with Monte Carlo simulations in order to build chemical bonding maps to study the local environment preferences that determine whether a material will phase segregate\, to form a single phase with clustered regions\, or form a disordered solid solution. This enables us to identify compounds that may be synthesizable or could be stabilized by entropy – thus allowing for more reliable materials discovery and design. \nThis work was supported by the U.S. D.O.E.\, Office of Science\, BES\, MSED (first principles calculations) and the LDRD Program of ORNL (simulations)\, managed by UT-Battelle\, LLC\, for the U. S. DOE using resources at NERSC and OLCF. \nBio: \n \nDr. Valentino R. Cooper is the Section Head for the Materials Theory Modeling and Simulations section in the Materials Sciences and Technology Division at Oak Ridge National Laboratory. He received his Ph. D from the Chemistry Department at the University of Pennsylvania in 2005. Prior to joining ORNL in 2008\, he was a post-doctoral associate in the Physics Department of Rutgers University. His research focuses on electronic structure methods for understanding dispersion interactions and in the prediction of functional materials including piezoelectrics and ferroelectrics. Dr. Cooper is a 2013 recipient of the Department of Energy Early Career award.
URL:https://qmi.miffanytark.com/event/dr-valentino-r-cooper-exploring-the-chemical-landscape-of-high-entropy-oxides/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220331T100000
DTEND;TZID=America/Vancouver:20220331T110000
DTSTAMP:20220323T181708Z
CREATED:20220323T181708Z
LAST-MODIFIED:20220323T181708Z
UID:4194-1648720800-1648724400@qmi.miffanytark.com
SUMMARY:Kwabena Bediako: New Twists on Chemistry and Physics in Moiré Superlattices
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Kwabena Bediako\, Assistant Professor at UC Berkeley\, Dept. of Chemistry \nTitle: New twists on chemistry and physics in moiré superlattices     \nAbstract: Atomically thin or two-dimensional (2D) materials can be assembled into bespoke heterostructures to produce some extraordinary physical phenomena. Likewise\, these highly tunable materials are useful platforms for exploring fundamental questions of interfacial chemical/electrochemical reactivity. One exciting and relatively recent example is the formation of moiré superlattices from azimuthally misoriented (twisted) layers. These moiré superlattices result in flat bands that lead to an array of correlated electronic phases. However\, in these systems\, complex strain relaxation can also strongly influence the fragile electronic states of the material. Precise characterization of these materials and their properties is therefore critical to the understanding of the behavior of these novel moiré materials (and 2D heterostructures in general). In this talk\, I will discuss how spontaneous mechanical deformations (atomic reconstruction) and resultant intralayer strain fields at moiré superlattices of twisted bilayer graphene have been quantitatively imaged using 4D-STEM Bragg interferometry. I will also discuss the impact of these mechanical deformations to the electronic band structure of these moiré superlattices and the correlated electronic phases they host. The talk will then explore how various degrees of freedom that are unique to 2D materials may be used to tailor interfacial chemistry at well-defined mesoscopic electrodes and the outlook for new paradigms of functional materials for energy conversion and low-power electronic devices. \nBio: Kwabena was born in Ghana\, West Africa. He moved to the US in 2004 for his undergraduate studies in Chemistry at Calvin College\, MI\, graduating with honors in 2008. After a year working at UOP Honeywell in IL where he researched new catalysts for the petrochemical and gas processing industries\, he traveled from the Midwest to the East Coast to begin his graduate studies in Inorganic Chemistry with Prof. Daniel Nocera at MIT (and later Harvard University). His graduate research focused on structural and mechanistic studies of water splitting electrocatalysis at cobalt and nickel compounds. After receiving his Ph.D. in 2015 from Harvard University\, Kwabena began postdoctoral work in Prof. Philip Kim’s group in the Department of Physics at Harvard\, where he studied ion intercalation and quantum transport in 2D van der Waals heterostructures. In July 2018\, Kwabena joined the faculty of the UC Berkeley Department of Chemistry. Awards received include: AFOSR Young Investigator award\, ONR Young investigator award\, DOE Early Career Award\, Gordon and Betty Moore Materials Synthesis Fellow\, and CIFAR–Azrieli Global Scholar.
URL:https://qmi.miffanytark.com/event/kwabena-bediako-new-twists-on-chemistry-and-physics-in-moire-superlattices/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220324T100000
DTEND;TZID=America/Vancouver:20220324T110000
DTSTAMP:20220316T183214Z
CREATED:20220316T183214Z
LAST-MODIFIED:20220316T183214Z
UID:4171-1648116000-1648119600@qmi.miffanytark.com
SUMMARY:Marlou Slot: Atom by Atom and Layer by Layer: Designing and Realizing Electronic Quantum Matter
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\n \nSpeaker: Marlou Slot; National Institute of Standards and Technology (NIST) – Gaithersburg\, Maryland\, United States \nTitle: Atom by Atom and Layer by Layer: Designing and Realizing Electronic Quantum Matter \nAbstract: Quantum simulators are a versatile tool to study the behavior of quantum matter in a controlled way. Elusive or complex quantum systems are simulated using accessible quantum systems that can be manipulated at will. While platforms based on\, among others\, ultracold atoms and photons are well-established\, electronic platforms are currently being developed.\nThe scanning tunneling microscope (STM) is uniquely suited to create and manipulate electronic 2D potential landscapes at will in-situ. By atomic-scale patterning of the 2D electron gas at specific metal surfaces\, the electrons can be molded into electronic lattices with nearly any geometry. In this talk\, I will present CO molecules adsorbed on a Cu(111) surface as a highly-tunable electronic quantum simulator\, in which the lattice geometry\, the orbital degree of freedom\, the dimension and the topology can be tailored [1-4]. Moving beyond the in-situ approach\, ex-situ nanofabricated twisted van der Waals devices pave the way to study electron-electron interactions in tailor-made 2D potential landscapes [5]. I will demonstrate high-resolution gate-tunable Landau level spectroscopy and signatures of correlated states in twisted double bilayer graphene\, expanding the quantum simulation toolkit from atom by atom to layer by layer. \n[1] M. R. Slot et al.\, Nat. Phys. 13\, 672 (2017)\n[2] S. N. Kempkes and M. R. Slot et al.\, Design and characterization of electrons in a fractal geometry\, Nat. Phys. 15\, 127 (2019)\n[3] M. R. Slot and S. N. Kempkes et al.\, p-Band Engineering in Artificial Electronic Lattices\, PRX 9\, 011009 (2019)\n[4] S. N. Kempkes and M. R. Slot et al.\, Robust zero-energy modes in an electronic higher-order topological insulator\, Nat. Mater. 18\, 1292 (2019)\n[5] D.M. Kennes et al.\, Moiré heterostructures as a condensed-matter quantum simulator\, Nat. Phys. 17\, 155 (2021) \nBio: Marlou Slot is a Rubicon Postdoctoral Fellow and NIST-Georgetown PREP Fellow working with Dr. Joseph Stroscio at the National Institute of Standards and Technology. She obtained her PhD from Utrecht University working with Prof. Daniel Vanmaekelbergh and Prof. Ingmar Swart. Prior to that\, she obtained her undergraduate degree from RWTH Aachen University and EPFL Lausanne and she was a research assistant at Forschungszentrum Jülich. Her research interests focus on designer quantum matter realized and/or measured using scanning probe microscopy\, including van der Waals heterostructures and in-situ patterned surfaces.
URL:https://qmi.miffanytark.com/event/marlou-slot-atom-by-atom-and-layer-by-layer-designing-and-realizing-electronic-quantum-matter/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220317T100000
DTEND;TZID=America/Vancouver:20220317T110000
DTSTAMP:20220309T185436Z
CREATED:20220309T185436Z
LAST-MODIFIED:20220309T185436Z
UID:4165-1647511200-1647514800@qmi.miffanytark.com
SUMMARY:Alexandra Navrotsky: Recent Developments in High Temperature Calorimetry
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Alexandra Navrotsky – Center for Materials of the Universe (MotU) \, Arizona State University \nTitle: Recent developments in high temperature calorimetry \nAbstract: A variety of high temperature calorimetric techniques have recently advanced for application to refractory oxides and related materials. These include improvements in oxide melt solution calorimetry at temperatures up to 1500 ⁰C\, differential thermal analysis to 2500 ⁰C\, and “drop-n-catch” calorimetry to 3000 ⁰C. Used together\, these methods enable one to draw a more complete picture of phase stability\, order-disorder\, melting and crystallization\, and dissolution of solids in silicate melts. These methods will be illustrated using examples from rare earth materials chemistry. New developments in the calorimetry of chalcogenides and mixed anion materials will also be presented. The synergy among calorimetry\, first principles calculations and computations of phase diagrams will be emphasized. \nBio: Alexandra Navrotsky – Professor\, School of Molecular Sciences and School for Engineering of Matter\, Transport and Energy \nAffiliated Faculty Member\, School of Earth and Space Exploration \nDirector\, Center for Materials of the Universe
URL:https://qmi.miffanytark.com/event/alexandra-navrotsky-recent-developments-in-high-temperature-calorimetry/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220310T100000
DTEND;TZID=America/Vancouver:20220310T110000
DTSTAMP:20220302T215953Z
CREATED:20220302T215953Z
LAST-MODIFIED:20220302T215953Z
UID:4155-1646906400-1646910000@qmi.miffanytark.com
SUMMARY:Inna Vishik: Electronic Correlations and Topology across Tc in a Magnetic Weyl Semimetal
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Inna Vishik\, Associate Professor in Physics and Astronomy at UC Davis \nAbstract: Co3Sn2S2 is a magnetic Weyl semimetal below its Curie temperature (Tc) of 177K. I will discuss our recent spatial and temperature-dependent angle-resolved photoemission spectroscopy (ARPES) studies in this system.  Across Tc\, we observe signatures of a topological phase transition\, but also observe changes in bulk bands which are inconsistent with a simple lifting of exchange interactions\, suggesting enhanced electronic correlations in the regime without long-range magnetic order.  I will also discuss spatial-dependent microARPES data which quantify the characteristic differences between Sn- and S- terminated surfaces. \nRef: Rossi\, Ivanov\, et al\, PRB 104\, 155115 (2021) \nBio:  Inna Vishik is an Associate Professor in Physics and Astronomy at UC Davis.  Since 2016\, her lab has been performing ARPES and ultrafast optics experiments to elucidate emergent phenomena in superconducting\, correlated\, and topological quantum materials.  Prior to this\, she received her PhD at Stanford and was subsequently a Pappalardo Postdoctoral fellow at MIT.
URL:https://qmi.miffanytark.com/event/inna-vishik-electronic-correlations-and-topology-across-tc-in-a-magnetic-weyl-semimetal/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220303T100000
DTEND;TZID=America/Vancouver:20220303T230000
DTSTAMP:20220228T230022Z
CREATED:20220228T230022Z
LAST-MODIFIED:20220228T230022Z
UID:4148-1646301600-1646348400@qmi.miffanytark.com
SUMMARY:Ke Zou: Recent progress on understanding the superconductivity of bulk and monolayer FeSe
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Ke Zou\, Stewart Blusson Quantum Matter Institute \nAbstract: \nThe physics of high-temperature superconductors is usually governed by the interplay of the spin and charge degrees of freedom. FeSe has the simplest chemical composition among Fe-based superconductors\, yet monolayer FeSe on SrTiO3 substrate reports one of the highest superconducting transition temperatures. I will summarize the progress on understanding its superconductivity from my group and other groups in the recent couple of years. We will discuss the specific roles of charge transfer\, spin magnetic moment\, and phonon coupling in this system. \n\nF. Li\, I. Elfimov\, and G.A. Sawatzky\, “Modulation doping of the FeSe monolayer on SrTiO3”\, submitted (2022).\nC. Liu\, H. Shin\, A. Doll\, H.H. Kung\, R.P. Day\, B.A. Davidson\, J. Dreser\, G. Levy\, A. Damascelli\, C. Piamonteze\, and K. Zou\, “High-temperature superconductivity and robustness against magnetic polarization in monolayer FeSe on EuTiO3”\, npj Quantum Materials 6\, 85 (2021).\nC. Liu\, R.P. Day\, F. Li\, R.L. Roemer\, S. Zhdanovich\, S. Gorovikov\, T. Pedersen\, J. Jiang\, S. Lee\, M. Schneider\, D. Wong\, P. Dosanjh\, F.J. Walker\, C.H. Ahn\, G. Levy\, A. Damascelli\, G.A. Sawatzky\, and K. Zou\, “High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy”\, Nature Communications 12\, 4573 (2021).\n\nBio: Assistant Professor\, Department of Physics and Astronomy – SBQMI \n\n\n\n\n\n\nResearch Focus\nOur research interests are in the growth of complex oxide and chalcogenide films by molecular beam epitaxy and the studies of their properties and functions. We aim to achieve scientific and technological breakthroughs in new materials and new functional devices. We integrate molecular beam epitaxy synthesis with nanostructure fabrication and characterization techniques for physical and electronic structures\, to explore and control the generated properties in new materials and in new forms of materials\, such as in heterostructures and gated field-effect transistors.
URL:https://qmi.miffanytark.com/event/ke-zou-recent-progress-on-understanding-the-superconductivity-of-bulk-and-monolayer-fese/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220210T100000
DTEND;TZID=America/Vancouver:20220210T110000
DTSTAMP:20220131T181905Z
CREATED:20220131T181905Z
LAST-MODIFIED:20220131T181905Z
UID:4052-1644487200-1644490800@qmi.miffanytark.com
SUMMARY:Christian Schneider: Exciton-Polaritons and their condensates in microcavities loaded with atomically thin crystals
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Christian Schneider\, Institute of Physics\, University of Oldenburg \nMonolayer transition metal dichalcogenides (TMDC) have emerged as a new platform for studies of tightly bound excitons and many-body excitations in ultimately thin materials. Their giant dipole coupling to optical fields makes them very appealing for implementing novel photonic devices\, and for fundamental investigations in the framework of cavity quantum electrodynamics [1]. \nIn the regime of strong light-matter coupling between TMDC excitons and microcavity photons \,  the effect of bosonic condensation of becomes evident in the high-density regime [2]. I will  address the question on the emergence of long-range first-order spatial coherence\, via interferometric g(1)(t) measurements (Fig. 1c). I will finally discuss the emergence of coherence of exciton-polaritons in a trap at room temperature [3]. \n \nPolariton dispersion relation below (0.1 Pth\, panel a\, excitation laser at 1.671 eV) and above threshold (2Pth\, panel b). (c) Real space interference pattern produced in a Michelson interferometer\, with a zero delay between the two interfering paths\, and one retro-reflected image. \n[1] C. Schneider et al. Nature Commun. 9\, 2695 (2018). \n[2] C. Anton-Solanas\, et al. Nature Materials 1-7 (2021).
URL:https://qmi.miffanytark.com/event/christian-schneider-exciton-polaritons-and-their-condensates-in-microcavities-loaded-with-atomically-thin-crystals/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220203T100000
DTEND;TZID=America/Vancouver:20220203T110000
DTSTAMP:20220127T224446Z
CREATED:20220127T224446Z
LAST-MODIFIED:20220127T224446Z
UID:4048-1643882400-1643886000@qmi.miffanytark.com
SUMMARY:Eliška Greplová: Quantum Matter Meets Artificial Intelligence
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 \nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: Eliska Greplova\, Assistant professor at the Department of Quantum Nanoscience at Delft University of Technology \n  \nAbstract: The fields of condensed matter\, artificial intelligence and quantum computing have independently experienced a number of breakthroughs in the last decade. In this talk\, I am going provide an illustration of their mutually beneficial overlaps and emerging interdisciplinary applications. Specifically\, I am going to show how AI-motivated ansätze for quantum wave functions can help us solve complex problems in topological condensed matter physics. The emergent topological modes can in turn redefine a figure of merit for design of quantum devices – that\, to close the circle – give rise to challenging control problems that can be efficiently solved with the help of machine learning algorithms. \n  \nBio: Eliska is an assistant professor at Kavli Institute of Nanoscience\, Delft University of Technology\, Netherlands. She is leading Quantum Matter and AI group\, where she works at the boundary of quantum computing\, artificial intelligence and condensed matter physics. Prior to joining TU Delft\, Eliska completed her PhD at Aarhus University in Denmark and postdoctoral fellowship at ETH Zürich in Switzerland. Eliska is a member of World Economic Forum Global Future Council on Quantum Computing and co-founder of an open science platform Virtual Science Forum.
URL:https://qmi.miffanytark.com/event/eliska-greplova/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220127T100000
DTEND;TZID=America/Vancouver:20220127T110000
DTSTAMP:20220120T194754Z
CREATED:20220120T194754Z
LAST-MODIFIED:20220120T194754Z
UID:4020-1643277600-1643281200@qmi.miffanytark.com
SUMMARY:Jennifer Cano: Higher magic angles in twisted bilayer graphene and topological twistronics 
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: Jennifer Cano\, Assistant Professor at Stony Brook University \nTitle: Higher magic angles in twisted bilayer graphene and topological twistronics \n  \nBio: Jennifer Cano is an Assistant Professor at Stony Brook University and an Affiliate Associate Research Scientist at the Flatiron Institute. She earned a PhD in physics from the University of California\, Santa Barbara\, in 2015\, and was subsequently a postdoctoral fellow at the Princeton Center for Theoretical Science. Her research is focused on the classification and realization of topological phases of matter\, ranging from strongly correlated phases with fractionalized excitations to non-interacting topological band structures. \n  \nAbstract: We present recent analytical and numerical results on the chiral model of twisted bilayer graphene and introduce a new platform for twistronic devices on the surface of a topological insulator. In the first part of the talk\, we study the flat band wavefunctions of chiral twisted bilayer graphene at higher magic angles. We show that at higher magic angles\, the wavefunctions exhibit an increasing number of zeros\, resembling quantum Hall wavefunctions at higher Landau levels. Zeros of the same chirality cluster near the center of the moire unit cell\, causing an enhanced phase winding and circulating current. The wavefunctions at higher magic angles have signatures in scanning tunneling microscopy and orbital magnetization experiments. In the second half of the talk\, we investigate the fate of the surface Dirac cone of a three-dimensional topological insulator subject to a superlattice potential. Using a combination of diagrammatic perturbation theory\, lattice model simulations\, and ab initio calculations\, we report a dramatic renormalization of the surface Dirac cone velocity and the formation of gapless satellite Dirac cones. The latter can produce very flat bands that may be a fruitful place to searching for interaction-driven physics.
URL:https://qmi.miffanytark.com/event/jennifer-cano/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220120T100000
DTEND;TZID=America/Vancouver:20220120T110000
DTSTAMP:20220106T005046Z
CREATED:20220106T005046Z
LAST-MODIFIED:20220106T005046Z
UID:3950-1642672800-1642676400@qmi.miffanytark.com
SUMMARY:Christoph Renner: Electronic Vortex Core Structure of a d-Wave High Temperature Superconductor
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker \nChristoph Renner\, Vice-Dean\, Faculty of Science at University of Geneva \n  \nAbstract:\nHigh temperature superconductivity (HTS) in copper oxides keeps challenging our understanding. Among the outstanding puzzles is the electronic structure of the Abrikosov vortex cores. The fundamental excitations bound to magnetic vortices in type-II superconductors carry information about essential properties of the superconducting state. Their proper identification is therefore of prime interest to elucidate the mechanism driving HTS. We will review recent vortex core studies and present new scanning tunneling microscopy data [1] at low magnetic field\, which unveil the d wave electronic structure of the vortex core predicted by Wang and MacDonald in 1995 [2]. We show that previously reported unconventional electronic structures\, including the checkerboard charge order in the vortex halo and the absence of a zero-bias conductance peak at the vortex center\, are direct consequences of short inter-vortex distance and consequent vortex-vortex interactions prevailing in earlier experiments done at significantly higher field. The remarkable change of the spectroscopic footprint of the vortex cores we find between 0.16 Tesla and 3 Tesla is surprising for such a low energy scale and calls for further investigations. \n  \n[1] Gazdic\, T.\, et al.\, arXiv:2103.05994\, 2021. \n[2] Y. Wang and A. H. MacDonald\, Physical Review B 52\, R3876 (1995). \n  \nBiography: \nChristoph Renner is professor of physics at the department of quantum matter physics at the University of Geneva\, Switzerland. He is leading a research group investigating electronic ground states and their interplay in low dimensional correlated electron systems using scanning probe microscopy and spectroscopy. Prior to joining Geneva in 2006\, he was appointed senior and then principal research fellow at University College London (UCL)\, with affiliations in the London Centre for Nanotechnology (LCN)\, the Department of Physics & Astronomy\, and the Department of Medicine. During his time in London\, he was also a business fellow of the London Technology Network. Before moving to UCL\, he held a visiting scientist position at the NEC Research Institute in Princeton. \n  \nWith over 30 years of experience\, Prof. Renner is an expert in developing and applying variable temperature scanning tunnelling microscopy to study correlated electron materials\, in particular superconducting\, charge ordered and low dimensional systems. His research is published in leading academic journals and has been selected as a physics highlight of 2017 by the editors of Physics. Currently\, his team is focusing on high temperature superconductors and spectroscopy of tuneable electronic properties in transition metal dichalcogenides and devices by means of strain\, space charge doping and thickness. Among recent scientific successes are the observation of the intrinsic vortex core signature expected for a superconductor whose gap has d-wave symmetry\, the link between CDW contrast inversion in STM images and the CDW gap well below the Fermi level\, and the exposure of a multiband CDW in a transition metal dichalcogenide. \n  \nInterested in public outreach\, Prof. Renner was founding director of the Physiscope of the University of Geneva between 2007 and 2017. Since 2014\, he is a founding member and president of the Scienscope\, an initiative introducing junior and high school children as well as the public to science in a hands-on and entertaining manner. Prof. Renner is also actively promoting collaborations with industry\, founding member and president of the Laboratory for Advanced Technology\, a gateway supporting innovation by facilitating industry access to the competences and equipment at the University of Geneva. He was vice president of the physics section (2011-2014) and\, since 2014\, he is vice dean for innovation and infrastructures of the Faculty of Science of the University of Geneva. \n  \nProf. Renner holds a PhD degree from the University of Geneva. He received the Jean Würth award for best PhD Thesis and the IBM award of the Swiss Physical Society. As hobbies\, he enjoys piloting\, travelling and cooking.
URL:https://qmi.miffanytark.com/event/christoph-renner/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220113T100000
DTEND;TZID=America/Vancouver:20220113T110000
DTSTAMP:20220105T235901Z
CREATED:20220105T235901Z
LAST-MODIFIED:20220105T235901Z
UID:3948-1642068000-1642071600@qmi.miffanytark.com
SUMMARY:Claire Donnelly: Three-dimensional nanomagnetism: from textures in the bulk to 3D magnetic nanostructures
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: \nClaire Donnelly\, Max Planck Institute for Chemical Physics of Solids \n  \nAbstract: \nThree dimensional magnetic systems promise significant opportunities for applications\, for example providing higher density devices [1] and new functionalities associated with complex topology and greater degrees of freedom [2\,3]. \n  \nWith the recent development of three-dimensional imaging techniques\, it is now possible to map internal three-dimensional magnetic structures\, and their response to external excitations. In this way we have observed three-dimensional vortex structures\, as well as Bloch point singularities [4\,5] and\, more recently\, nanoscale magnetic vortex rings [6\,7]. \n  \nIn addition to the static magnetic structure\, the dynamic response of the 3D magnetic configuration to excitations is key to our understanding of both fundamental physics\, and applications. With our recent development of X-ray magnetic laminography [5]\, it is now possible to determine the magnetisation dynamics of a three-dimensional magnetic system [5]. \n  \nAs well as observing magnetic textures within the “bulk”\, recent advances in nanofabrication make possible the fabrication of complex 3D magnetic nanostructures [8]. In this way we have realised magnetic double helices [9]\, which host highly coupled domain wall pairs that in turn lead to textures in the magnetic induction [9]. These offer not only a potential route to domain wall processing\, but also for the patterning of nanotextures in the magnetic field. \n  \nThese new experimental capabilities for 3D magnetic systems open the door to complex three-dimensional magnetic structures\, and their dynamic behaviour. \n  \nReferences: \n[1] Parkin et al.\, Science 320\, 190 (2008) \n[2] Fernández-Pacheco et al.\, Nat. Comm. 8\, 15756 (2017) \n[3] Donnelly and Scagnoli\, J. Phys. D: Cond. Matt. 32\, 213001 (2020). \n[4] Donnelly et al.\, Nature 547\, 328 (2017). \n[5] Donnelly et al.\, Nature Nanotechnology 15\, 356 (2020). \n[6] Cooper\, PRL. 82\, 1554 (1999). \n[7] Donnelly et al.\, Nat. Phys. 17\, 316 (2020) \n[8] Skoric et al.\, Nano Lett. 20\, 184 (2020). \n[9] Donnelly et al.\, Nature Nanotechnology (2021) https://doi.org/10.1038/s41565-021-01027-7 . \n  \nBiography: \nFollowing her MPhys at the University of Oxford\, Claire went to Switzerland to carry out her PhD studies at the Paul Scherrer Institute and ETH Zurich. She was awarded her PhD in 2017 for her work on 3D systems\, which was recognised by a number of prizes including the APS Richard Greene Dissertation Award\, the Werner Meyer-Ilse Memorial Award\, the ETH Medal\, and the SPS Award for Computational Physics. After a postdoc at the ETH Zurich\, she moved to the University of Cambridge and the Cavendish Laboratory as a Leverhulme Early Career Research Fellow\, where she was awarded the L’Oreal For Women In Science Fellowship\, and the European Magnetism Association Young Scientist Award. Since September 2021 she is a Lise Meitner Group Leader of Spin3D at the Max Planck Institute for Chemical Physics of Solids in Dresden\, Germany.
URL:https://qmi.miffanytark.com/event/claire-donnelly/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211202T100000
DTEND;TZID=America/Vancouver:20211202T110000
DTSTAMP:20211122T171956Z
CREATED:20211122T171956Z
LAST-MODIFIED:20211122T171956Z
UID:3650-1638439200-1638442800@qmi.miffanytark.com
SUMMARY:Ben Breitung: Exploring High-Entropy Materials for Electrochemical Applications
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09 \nMeeting ID: 668 7999 5529 \nPasscode: 113399 \n  \n\nSpeaker: Ben Breitung\, Karlsruhe Institute of Technology \n  \nTitle: Exploring High-Entropy Materials for Electrochemical Applications \n  \nAbstract: High-entropy ceramics are a novel materials class with rapidly increasing significance since their discovery in 2015. Their unique crystal structure and the enormous compositional freedom allows tailoring these compounds towards desired properties\, thus enabling the development and optimization of new innovative materials for many existing applications. \nThis talk will give an overview about the general high-entropy concept and will describe the utilization of high-entropy ceramics for electrochemical applications. The fundamental impacts of high-entropy on material properties will be discussed\, especially in the application areas of batteries and catalytic materials. \n 
URL:https://qmi.miffanytark.com/event/ben-breitung/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211125T100000
DTEND;TZID=America/Vancouver:20211125T230000
DTSTAMP:20211117T221519Z
CREATED:20211117T221519Z
LAST-MODIFIED:20211117T221519Z
UID:3642-1637834400-1637881200@qmi.miffanytark.com
SUMMARY:Sinéad Griffin: Searching for New Matter
DESCRIPTION:Title: Searching for New Matter \nSpeaker: Sinéad Griffin\, Lawrence Berkeley National Laboratory \n  \nAbstract: \nThe past decade has seen a huge surge of interest in matter that cannot be described by our standard theories such as Landau-Ginzburg theory or the Standard Model. For example\, the theoretical proposal and subsequent experimental realization of topological phases in materials has ushered in a new era in the discovery of new forms of matter. On top of this\, how these new phases of matter interact with our conventional order parameters such as superconducting\, ferroelectricity\, and magnetism\, is an emerging area. In this talk\, I will discuss how theory and ab initio calculations have driven the discovery of such novel forms of matter\, with applications in classical and quantum computing. Finally\, I will discuss how such emergent phenomena in quantum materials are apt for exploring matter that cannot be described by the Standard Model – dark matter – and how materials-by-design approaches can suggest new and enhanced detection experiments for low-mass dark matter detection. \n  \nBio: \nSinéad Griffin is a staff scientist in the Materials Science Division and the Molecular Foundry at Berkeley Lab. Originally from Ireland\, her work as a theorist focuses on the description and discovery of quantum materials and physical phenomena at the nanoscale. The applications of Sinéad’s work range from new materials for energy and quantum computing to exploring the origins of the universe. Her awards include the Swiss Physical Society’s General Prize\, an MIT Rising Star in Physics\, the Falling Walls Bay Area Young Innovator of the Year\, and an ‘Emerging Leader’ from the Institute of Physics. Aside from her research\, she is involved with building a research network in condensed matter physics in Africa\, including being awarded an inaugural American Physical Society Innovation Fund grant to set up a US-Africa Workshop and Network. \n 
URL:https://qmi.miffanytark.com/event/sinead-griffin-searching-for-new-matter/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211118T100000
DTEND;TZID=America/Vancouver:20211118T230000
DTSTAMP:20211115T161934Z
CREATED:20211115T161934Z
LAST-MODIFIED:20211115T161934Z
UID:3597-1637229600-1637276400@qmi.miffanytark.com
SUMMARY:Cory R. Dean: Towards realizing twistronics on demand
DESCRIPTION:Title: Towards realizing twistronics on demand\nSpeaker: Cory R. Dean\, Department of Physics\, Columbia University \nAbstract: The ability to isolate atomically thin crystals\, such as graphene\, boron nitride\, and the transition metal dichalcogenides\, and then mechanically layer them to form new heterostructures has driven a recent revolution in materials design. These layered structures are held together by weak van der waals forces\, rather than chemical bonding making it possible to readily mix and match 2D materials spanning a wide range of properties\, virtually at will. More recently it has been demonstrated that the weak interlayer coupling also makes it possible to arbitrarily tune the rotation angle between adjacent layers and that varying this twist angle can lead to dramatic transformations in electronic\, optical and magnetic of the combined heterostructure. Here I will discuss our ongoing efforts to develop in-situ control with the goal towards realizing dynamically tunable “twistronics”\, where twisted devices can be reconfigured and probed in real-time. I will discuss recent progress in terms of mechanical rotation of individual monolayers\, improved understanding of interfacial dissipation mechanisms\, implementation of in-situ feedback of twist angle and new approaches towards developing non-contact control of the heterostructure geometry at the nanoscale. Prospects for realizing a tunable quantum simulator in a solid state platform will be discussed.
URL:https://qmi.miffanytark.com/event/cory-r-dean-towards-realizing-twistronics-on-demand/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211104T100000
DTEND;TZID=America/Vancouver:20211104T110000
DTSTAMP:20211028T191424Z
CREATED:20211028T191424Z
LAST-MODIFIED:20211028T191424Z
UID:3518-1636020000-1636023600@qmi.miffanytark.com
SUMMARY:Abhay Pasupathy: Recent progress in moiré materials
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nSpeaker: Abhay Pasupathy\, Columbia University \nAbstract: I will discuss two recent sets of experiments from my group on moiré materials. In the first experiment\, I will discuss transport experiments on twisted bilayers of the monolayer semiconductor WSe2 (Wang et al\, Nature Materials 19\, 861 (2020) and Ghiotto et al Nature 597\, 345 (2021)). In these experiments\, we see the presence of an insulating state at half filling of the lowest subband of this material driven by electron correlations. I will describe our recent efforts to understand transport properties of this material and the evidence that there exist a ring of quantum critical points in this system at the metal-insulator transitions driven by doping and electric field. Time permitting\, I will then discuss scanning tunneling microscopy experiments on magic-angle twisted trilayer graphene where superconductivity has recently been observed. These imaging experiments show that the atomic and electronic structure of twisted trilayer graphene has a number of unique differences from its elder brother\, twisted bilayer graphene. I will speculate on the importance of these differences for superconductivity in this material. \n  \nBio: Abhay Pasupathy is a Professor of Physics at Columbia University (since 2009) and a group leader in the Condensed Matter Physics and Materials Science Department at Brookhaven National Laboratory (since 2019). His group uses scan probe microscopies and electron transport measurement to study emergent quantum phases in materials. Two-dimensional materials including exfoliated and thin-film grown materials are of particular interest.
URL:https://qmi.miffanytark.com/event/abhay-pasupathy-recent-progress-in-moire-materials/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211028T100000
DTEND;TZID=America/Vancouver:20211028T230000
DTSTAMP:20211019T145814Z
CREATED:20211019T145814Z
LAST-MODIFIED:20211019T145814Z
UID:3472-1635415200-1635462000@qmi.miffanytark.com
SUMMARY:Shanti Deemyad: Physics of Light Dense Matter: Quantum and Classical Effects in Dense lithium
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nSpeaker: Prof. Shanti Deemyad\, University of Utah \n  \nRestricting the volume of a material\, through application of pressure\, changes the dominance of interactions within the material\, and exposes unnatural states of matter not found in our predominantly adiabatic universe.  One of the most exotic phenomena in condensed matter is the phase transitions purely driven by quantum effects. While quantum fluctuations in electronic states are always relevant\, it is also possible to observe quantum effects in lattice of very light elements. At ambient conditions\, the lightest metal of the periodic system is lithium. Similar to hydrogen and helium even at zero temperature lattice of lithium remains far from static and a fascinating system to explore the lattice quantum effects in light dense matter. \nIn this talk I will review some of the major goals of research in high pressure physics in exploring the quantum effects in ultra-light dense matter and discuss how nuclear quantum effects affect the structural stability and superconductivity of lithium and other ultra-light materials. I will present our studies on exploring the signature of lattice quantum contributions to the structural phase transitions of lithium at low temperature\, the effect of pressure on the evolution of Fermi surface of lithium and present our results on resolving the long-lasting mystery of lithium ground state. \n 
URL:https://qmi.miffanytark.com/event/shanti-deemyad-physics-of-light-dense-matter-quantum-and-classical-effects-in-dense-lithium/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211021T100000
DTEND;TZID=America/Vancouver:20211021T110000
DTSTAMP:20211014T184841Z
CREATED:20211014T184841Z
LAST-MODIFIED:20211014T184841Z
UID:3429-1634810400-1634814000@qmi.miffanytark.com
SUMMARY:Vedika Khemani: Non-unitary dynamics via spacetime duality
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nAbstract: The addition of non-unitary ingredients to many-body quantum dynamics has led to a series of exciting developments in recent years\, including new out-of-equilibrium entanglement phases and phase transitions enabled by quantum measurements. I will present recent work [1] in which we show that a duality transformation between space and time on one hand\, and unitarity and non-unitarity on the other\, can be used to realize non-unitary evolutions whose steady states exhibit a rich variety of behavior in the scaling of their entanglement with subsystem size — from logarithmic to extensive to fractal. These fractally entangled states add a qualitatively new entry to the families of many-body quantum states that have been studied as energy eigenstates or dynamical steady states\, whose entropy almost always displays either area-law\, volume-law or logarithmic scaling. The range of steady-state entanglement scalings for the non-unitary evolution are closely related to the question of entanglement growth in time under different kinds of unitary dynamics\, from localized to chaotic. This connection is sharpened by an exact mapping to unitary evolution with edge decoherence\, in which  information is irreversibly “radiated  away” from one edge of the system. Finally\, I will discuss how these ideas could be experimentally realized with present-day or near-term quantum technologies\, and how spacetime duality allows us to mitigate (or eliminate altogether) the overhead from “postselection” of random measurement outcomes [2]. \n  \n[1] Matteo Ippoliti\, Tibor Rakovszky\, Vedika Khemani\, arxiv:2103.06873\n[2] Matteo Ippoliti\, Vedika Khemani\, PRL 126\, 060501 (2021) \n  \nBio: Vedika Khemani is an assistant professor of physics at Stanford University. After completing her Ph.D. at Princeton University in 2016\, she did her postdoctoral work as a Junior Fellow at Harvard. She is a recipient of an Alfred P. Sloan Fellowship\, a DOE Early Career Award\, the William L. McMillan Award\, an APS George E. Valley Jr. Prize\, the Breakthrough New Horizons in Physics Prize and the Packard Fellowship in Science and Engineering. \n 
URL:https://qmi.miffanytark.com/event/vedika-khemani-non-unitary-dynamics-via-spacetime-duality/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211014T100000
DTEND;TZID=America/Vancouver:20211014T110000
DTSTAMP:20211004T145423Z
CREATED:20211004T145423Z
LAST-MODIFIED:20211004T145423Z
UID:3374-1634205600-1634209200@qmi.miffanytark.com
SUMMARY:CM Seminar - Andrew Potter
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nAbstract: Quantum computation tantalizing promises efficient solutions to a broad range of classically-hard materials and chemistry simulation problems of interest to both basic science and practical applications. However\, nascent quantum processors are severely limited in both memory and accuracy\, and remain a long way from surpassing state-of-the-art classical computational methods. In this talk\, I will review recent progress in bridging this gap by leveraging efficient quantum data compression afforded by tensor network representations\, along with opportunistic midcircuit qubit reset and re-use in order to simulate large-scale models of quantum materials with relatively few qubits. I will highlight recent experimental implementations of quantum tensor network algorithms for simulating entangled ground-states and non-equilibrium dynamics of correlated spins and electrons on a trapped ion quantum processor. \n  \nBio: Andrew Potter is an assistant professor in the physics and astronomy department at UBC\, and SBQMI principle investigator\, working on theoretical problems at the intersection of quantum matter\, dynamics\, information\, and computing. Before joining UBC/SBQMI obtained his PhD from MIT\, was a Gordon and Betty Moore foundation postdoctoral fellow at UC Berkeley\, an assistant professor of physics at the University of Texas at Austin\, and a principle theoretical physicist at Honeywell | Quantum Solutions. \n  \nhttp://qmi.ubc.ca/news/new-investigator-meet-andrew-potter/
URL:https://qmi.miffanytark.com/event/andrew-potter-simulating-highly-entangled-matter-with-quantum-tensor-networks/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211007T100000
DTEND;TZID=America/Vancouver:20211007T110000
DTSTAMP:20210928T161002Z
CREATED:20210928T161002Z
LAST-MODIFIED:20210928T161002Z
UID:3322-1633600800-1633604400@qmi.miffanytark.com
SUMMARY:CM Seminar - Benjamin Frandsen
DESCRIPTION:Talk title: From Quantum Magnets to Magnetic Thermoelectrics: Short-Range Spin Correlations and the Secrets They Keep \nSpeaker: Benjamin Frandsen\, Brigham Young University \nAbstract: Short-range magnetic correlations have been increasingly recognized in recent years for their importance in contexts as widely varied as geometrically frustrated magnetism and functional magnetocaloric materials. Neutron scattering provides experimental access to these short-range correlations through magnetic diffuse scattering\, but characterizing magnetic short-range order with quantitative accuracy has remained a difficult task. Here\, I introduce magnetic pair distribution function (mPDF) analysis as a powerful tool for the detailed elucidation of shortrange magnetic correlations by Fourier transforming the diffuse magnetic scattering into real space\, and I present the application of mPDF to two material systems for which the details of the short-range magnetic correlations are crucial for their unusual properties. The first is TmMgGaO4\, an Ising triangular lattice antiferromagnet with rich low-temperature behavior\, including a predicted topological Kosterlitz-Thouless transition. Our mPDF results reveal intricate spin correlations consistent with this theoretical prediction\, providing strong experimental support for the proposed Kosterlitz-Thouless phase. The second material is MnTe\, an antiferromagnetic semiconductor with excellent thermoelectric properties at elevated temperatures. The presence of short-range antiferromagnetic correlations above the Neel temperature contributes to the enhanced thermoelectric response. Using mPDF\, we reveal the real-space nature of these magnetic correlations and gain deeper insight into the origin of the unusually large thermopower of MnTe. \nBio: Ben Frandsen is an assistant professor in the Department of Physics and Astronomy at Brigham Young University in Utah. He earned his PhD in condensed matter physics at Columbia University in New York in 2016\, working with Professors Tomo Uemura and Simon Billinge on muon spin relaxation and x-ray and pair distribution function studies of strongly correlated electron systems. His graduate research took him to beautiful Vancouver many times to perform muon experiments at TRIUMF. Following his graduate work\, he joined the group of Bob Birgeneau at UC Berkeley in California as a postdoctoral researcher\, working primarily on experimental studies of iron-based superconductors. He joined the faculty at BYU in August 2018. His research at BYU is focused on investigating the local atomic and magnetic structure of complex materials using beams of x rays\, neutrons\, and muons. He was selected as a recipient of the U.S. Department of Energy Early Career Award in 2020 to study local atomic and magnetic structure in energy-relevant materials.
URL:https://qmi.miffanytark.com/event/cmseminar-benjamin-frandsen/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20210923T100000
DTEND;TZID=America/Vancouver:20210923T110000
DTSTAMP:20210916T154920Z
CREATED:20210916T154920Z
LAST-MODIFIED:20210916T154920Z
UID:3192-1632391200-1632394800@qmi.miffanytark.com
SUMMARY:Jason Alicea: Internally engineered Majorana modes in twisted bilayer graphene
DESCRIPTION:Abstract: Twisted bilayer graphene (TBG) realizes an exquisitely tunable\, strongly interacting system featuring superconductivity and various correlated insulating states.  In this talk I will introduce gate-defined wires in TBG as an enticing platform for Majorana-based fault-tolerant qubits.  Our proposal notably relies on “internally” generated superconductivity in TBG – as opposed to “external” superconducting proximity effects commonly employed in Majorana devices – and may operate even at zero magnetic field.  I will also describe how electrical measurements of gate-defined wires can reveal the nature of correlated insulators and shed light on the Cooper-pairing mechanism in TBG. \nBio: Jason Alicea received his PhD from UC Santa Barbara in 2007 and then held a postdoc fellowship at Caltech.  In 2010 he joined the faculty at UC Irvine before returning to Caltech as a professor in 2012.  His research explores novel phases of matter in various physical settings\, often motivated by fault-tolerant quantum computing applications.
URL:https://qmi.miffanytark.com/event/cm-seminar-internally-engineered-majorana-modes-in-twisted-bilayer-graphene/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20210916T100000
DTEND;TZID=America/Vancouver:20210916T110000
DTSTAMP:20210907T212539Z
CREATED:20210907T212539Z
LAST-MODIFIED:20210907T212539Z
UID:3134-1631786400-1631790000@qmi.miffanytark.com
SUMMARY:CM Seminar:  Controlling Emergent Behavior in Quantum Matter from a Theory Perspective
DESCRIPTION:Speaker: Prineha Narang\, Assistant Professor at Harvard University \n  \nMy group’s research focuses on how quantum matter behaves\, particularly away from equilibrium\, and how we can harness emergent effects in these systems. In this context\, I will focus on our newly introduced approaches to describe excited-states in quantum matter\, including electron-electron and electron-phonon interactions beyond leading order\, and predicting emergent states introduced by external drives. Next\, I will discuss a class of exotic collective excitations which are unique to time-reversal symmetry breaking (TRSB) superconductors and propose a number of means by which these excitations can be experimentally detected\, introducing a notion of “collective mode spectroscopy” of TRSB superconductors1. Building on this\, I will present avenues in using electromagnetic cavities and resonators to probe and control quantum matter discussing methods to treat electrons\, photons and phonons on the same quantized footing\, accessing new observables in strong light-matter coupling 2\,3. Understanding the role of such strong light-matter interactions in the regime of strongly-correlated electronic systems is of paramount importance to fields of study across condensed matter physics\, quantum optics\, and quantum chemistry 4-6. Our theoretical and computational framework7-9 opens new routes by which the important problem of strongly-correlated quantum dynamics may be studied in these fields. Finally\, I will give an outlook on driving correlated quantum systems far out-of-equilibrium to control the coupled electronic and lattice degrees-of-freedom and connect these recent predictions with ultrafast THz experiments underway. \n  \n\nPoniatowski\, N. R.\, Curtis\, J. B.\, Yacoby\, A. & Narang\, P. Spectroscopic signatures of time-reversal symmetry breaking superconductivity. arXiv [cond-mat.supr-con] (2021).\nSchäfer\, C.\, Flick\, J.\, Ronca\, E.\, Narang\, P. & Rubio\, A. Shining Light on the Microscopic Resonant Mechanism Responsible for Cavity-Mediated Chemical Reactivity. arXiv [quant-ph] (2021).\nPhilbin\, J. P. et al. Room temperature single-photon superfluorescence from a single epitaxial cuboid nano-heterostructure. arXiv [physics.optics] (2021).\nJuraschek\, D. M.\, Meier\, Q. N. & Narang\, P. Parametric Excitation of an Optically Silent Goldstone-Like Phonon Mode. Phys. Rev. Lett. vol. 124 (2020).\nJuraschek\, D. M.\, Narang\, P. & Spaldin\, N. A. Phono-magnetic analogs to opto-magnetic effects. Phys. Rev. Research 2\, 043035 (2020).\nJuraschek\, D. M.\, Neuman\, T.\, Flick\, J. & Narang\, P. Cavity control of nonlinear phononics. Phys. Rev. Research 3\, L032046 (2021)\n    Rivera\, N.\, Flick\, J. & Narang\, P. Variational Theory of Nonrelativistic Quantum Electrodynamics. Phys. Rev. Lett. 122\, 193603 (2019).\nFlick\, J.\, Rivera\, N. & Narang\, P. Strong light-matter coupling in quantum chemistry and quantum photonics. Nanophotonics 7\, 1479–1501 (2018).\nFlick\, J. & Narang\, P. Cavity-Correlated Electron-Nuclear Dynamics from First Principles. Physical Review Letters vol. 121 (2018).\n\n  \nBiosktech: Prineha Narang came to Harvard University from the Massachusetts Institute of Technology where she worked as a Research Scholar in Condensed Matter Theory in the Department of Physics. She received an M.S. and Ph.D. in Applied Physics from the California Institute of Technology (Caltech). Prineha’s work has been recognized by many awards and special designations\, including a Friedrich Wilhelm Bessel Research Award from the Alexander von Humboldt Foundation\, a Max Planck Sabbatical Award from the Max Planck Society\, and the IUPAP Young Scientist Prize in Computational Physics in 2021\, an NSF CAREER Award in 2020\, being named a Moore Inventor Fellow by the Gordon and Betty Moore Foundation for pioneering innovations in quantum science\, CIFAR Azrieli Global Scholar by the Canadian Institute for Advanced Research\, and a Top Innovator by MIT Tech Review (MIT TR35).
URL:https://qmi.miffanytark.com/event/cm-seminar-16sep2021/
CATEGORIES:CM Seminar,Public
END:VEVENT
END:VCALENDAR